Thumbnailing command failed on Mac

[ElhemEnohpi]

I installed the scripts, but I get the error message: "Thumbnailing failed, check console for details." The folder for the file's thumbnails is created, but there are no thumbnails or log files in it, even if I put "mpv_keep_logs=yes" in mpv_thumbnail_script.conf - I tried it on several files, some mkvs and an avi, none work. Using macOS 10.12.

mpv's main log file contains the following, let me know if you need more:

[   0.010][v][cplayer] mpv 0.29.1 Copyright © 2000-2018 mpv/MPlayer/mplayer2 projects
[   0.010][v][cplayer]  built on Fri Oct  5 00:01:23 CEST 2018
[   0.010][v][cplayer] ffmpeg library versions:
[   0.010][v][cplayer]    libavutil       56.14.100
[   0.010][v][cplayer]    libavcodec      58.18.100
[   0.010][v][cplayer]    libavformat     58.12.100
[   0.010][v][cplayer]    libswscale      5.1.100
[   0.010][v][cplayer]    libavfilter     7.16.100
[   0.010][v][cplayer]    libswresample   3.1.100
[   0.010][v][cplayer] ffmpeg version: 4.0.2
[   0.010][v][cplayer] 
[   0.010][v][cplayer] Configuration: waf configure --prefix=/Users/djinn/apps/homebrew/Cellar/mpv/0.29.1 --enable-html-build --enable-javascript --enable-libmpv-shared --enable-lua --confdir=/Users/djinn/apps/homebrew/etc/mpv --datadir=/Users/djinn/apps/homebrew/Cellar/mpv/0.29.1/share/mpv --mandir=/Users/djinn/apps/homebrew/Cellar/mpv/0.29.1/share/man --docdir=/Users/djinn/apps/homebrew/Cellar/mpv/0.29.1/share/doc/mpv --enable-zsh-comp --zshdir=/Users/djinn/apps/homebrew/Cellar/mpv/0.29.1/share/zsh/site-functions
[   0.010][v][cplayer] List of enabled features: 51deb apple-remote asm atomics bsd-fstatfs build-date cocoa coreaudio cplayer cplugins debug-build drmprime fchmod ffmpeg gl gl-cocoa glob glob-posix gnuc gpl iconv javascript jpeg lcms2 libaf libass libass-osd libav-any libavcodec libavdevice libdl libm libmpv-shared lua macos-cocoa-cb macos-touchbar optimize osx-thread-name plain-gl posix posix-or-mingw posix-spawn posix-spawn-native pthreads rubberband stdatomic videotoolbox-gl videotoolbox-hwaccel zlib zsh-comp
[   0.010][d][ytdl_hook] Loading lua script @ytdl_hook.lua...
[   0.010][d][stats] Loading lua script @stats.lua...
[   0.011][d][ytdl_hook] loading mp.defaults
[   0.011][d][stats] loading mp.defaults
[   0.014][d][stats] loading @stats.lua

(...)

[   0.701][v][cplayer] first video frame after restart shown
[   0.702][d][cplayer] Run command: script-message, flags=0, args=[mpv_thumbnail_script-worker, mpv_thumbnail_script_server]
[   0.702][d][mpv_thumbnail_script_server] Announcing self to master... 
[   0.702][d][cplayer] Run command: script-message, flags=0, args=[mpv_thumbnail_script-worker, mpv_thumbnail_script_server]
[   0.702][d][cplayer] Run command: script-binding, flags=9, args=[mpv_thumbnail_script_client_osc/__keybinding2]
[   0.714][v][cplayer] starting audio playback
[   0.719][d][mpv_thumbnail_script_client_osc] Thumbnailer.state: {"finished_thumbnails" = 0, "is_remote" = false, "thumbnail_template" = "/Users/username/.config/mpv/mpv_thumbs_cache/The.Movie.Name-322085388/%06d.bgra", "thumbnail_directory" = "/Users/username/.config/mpv/mpv_thumbs_cache/The.Movie.Name-322085388", "thumbnail_delta" = 17.033386666667, "worker_extra" = {}, "available" = true, "thumbnail_count" = 150, "thumbnail_size" = {"w" = 200, "h" = 112}, "thumbnails" = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, "ready" = true} 
[   0.719][d][mpv_thumbnail_script_client_osc] Registered worker mpv_thumbnail_script_server 
[   0.720][v][cplayer] playback restart complete
[   0.721][d][cplayer] Run command: script-message-to, flags=0, args=[mpv_thumbnail_script_server, mpv_thumbnail_script-slaved]
[   0.721][d][mpv_thumbnail_script_server] Successfully registered with master 
[   0.736][v][cplayer] Change display sync audio drift: -1
[   0.738][d][mpv_thumbnail_script_client_osc] Splitting 150 thumbnails amongst 1 worker(s) 
[   0.739][d][mpv_thumbnail_script_client_osc] Giving workers state: {"enabled":true,"finished_thumbnails":0,"worker_input_path":"/Volumes/My Videos/The.Movie.Name.mkv","is_remote":false,"thumbnail_template":"/Users/username/.config/mpv/mpv_thumbs_cache/The.Movie.Name-322085388/%06d.bgra","thumbnail_directory":"/Users/username/.config/mpv/mpv_thumbs_cache/The.Movie.Name-322085388","thumbnail_delta":17.033387,"worker_extra":[],"available":true,"thumbnail_count":150,"thumbnail_size":{"w":200,"h":112},"thumbnails":[-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1],"ready":true} 
[   0.740][d][mpv_thumbnail_script_client_osc] Assigning job to mpv_thumbnail_script_server [1,65,129,33,97,17,49,81,113,145,9,25,41,57,73,89,105,121,137,5,13,21,29,37,45,53,61,69,77,85,93,101,109,117,125,133,141,149,3,7,11,15,19,23,27,31,35,39,43,47,51,55,59,63,67,71,75,79,83,87,91,95,99,103,107,111,115,119,123,127,131,135,139,143,147,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150] 
[   0.757][d][cplayer] Run command: script-message-to, flags=0, args=[mpv_thumbnail_script_server, mpv_thumbnail_script-job, {"enabled":true,"finished_thumbnails":0,"worker_input_path":"/Volumes/My Videos/The.Movie.Name.mkv","is_remote":false,"thumbnail_template":"/Users/username/.config/mpv/mpv_thumbs_cache/The.Movie.Name-322085388/%06d.bgra","thumbnail_directory":"/Users/username/.config/mpv/mpv_thumbs_cache/The.Movie.Name-322085388","thumbnail_delta":17.033387,"worker_extra":[],"available":true,"thumbnail_count":150,"thumbnail_size":{"w":200,"h":112},"thumbnails":[-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1],"ready":true}, [1,65,129,33,97,17,49,81,113,145,9,25,41,57,73,89,105,121,137,5,13,21,29,37,45,53,61,69,77,85,93,101,109,117,125,133,141,149,3,7,11,15,19,23,27,31,35,39,43,47,51,55,59,63,67,71,75,79,83,87,91,95,99,103,107,111,115,119,123,127,131,135,139,143,147,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150]]
[   0.760][d][mpv_thumbnail_script_server] Handling given job 
[   0.760][d][mpv_thumbnail_script_server] Generating 150 thumbnails @ 200x112 for "/Volumes/My Videos/The.Movie.Name.mkv" 
[   0.760][d][mpv_thumbnail_script_server] Starting work on thumbnail 0 
[   0.760][d][cplayer] Run command: script-message, flags=0, args=[mpv_thumbnail_script-progress, 1]
[   0.792][e][mpv_thumbnail_script_server] Thumbnailing command failed! 
[   0.792][e][mpv_thumbnail_script_server] mpv process error: init 
[   0.792][e][mpv_thumbnail_script_server] Process stdout:  
[   0.792][e][mpv_thumbnail_script_server] Debug log: /Users/username/.config/mpv/mpv_thumbs_cache/The.Movie.Name-322085388/000000.bgra.log 
[   0.792][e][mpv_thumbnail_script_server] Output file missing! /Users/username/.config/mpv/mpv_thumbs_cache/The.Movie.Name-322085388/000000.bgra 
[   0.792][d][cplayer] Run command: show-text, flags=0, args=[Thumbnailing failed, check console for details, 3500, 0]

[TheAMM]

Starting the subprocess itself seems to fail (ie. the process doesn't even get called). Likely because mpv is not in PATH, but it's possible it's something else maccy, which I have no experience with. Try adding mpv to PATH if it's not.

[ElhemEnohpi]

Thanks, I solved it by creating a link from the mpv binary, which is inside the mpv.app bundle in /Applications/mpv.app/Contents/MacOS/mpv, to /usr/local/bin/mpv.

[nvcken]

Hi @ElhemEnohpi
Is this case same with you ? Thumbnail not work on MacOS
or do you know what wrong with my setup & config ?

[ElhemEnohpi]

@nvcken I don't know, I stopped using because of other issues.

[ac4man]

How do I link the /Applications/mpv.app/Contents/MacOS/mpv to /usr/local/bin/mpv?

[your-diary]

@ac4man

sudo ln -s /Applications/mpv.app/Contents/MacOS/mpv /usr/local/bin/mpv

(The suggested solution worked like a charm on my M1 mac.)